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CompTIA XK0-005 Linux+ certification is an industry-recognized certification that validates the candidate's knowledge and skills in Linux administration. It covers a broad range of topics, including system architecture, installation and package management, networking, security, and shell scripting. CompTIA Linux+ Certification Exam certification is vendor-neutral, making it widely recognized and applicable to different Linux distributions. Passing XK0-005 exam demonstrates the candidate's competence in Linux administration, making them a valuable asset to any organization.
The XK0-005 exam covers a broad range of topics related to Linux, including system administration, system architecture, security, storage management, virtualization, scripting, and networking. XK0-005 exam consists of 90 multiple-choice and performance-based questions that are designed to evaluate the candidate's ability to perform various tasks related to Linux administration.
NEW QUESTION # 65
A new Linux systems administrator just generated a pair of SSH keys that should allow connection to the servers. Which of the following commands can be used to copy a key file to remote servers? (Choose two.)
- A. ssh-copy-id
- B. ssh-keyscan
- C. ssh-keygen
- D. wget
- E. scp
- F. ftpd
Answer: A,E
Explanation:
The commands ssh-copy-id and scp can be used to copy a key file to remote servers. The command ssh-copy-id copies the public key to the authorized_keys file on the remote server, which allows the user to log in without a password. The command scp copies files securely over SSH, which can be used to transfer the key file to any location on the remote server. The other options are incorrect because they are not related to copying key files. The command wget downloads files from the web, the command ssh-keygen generates key pairs, the command ssh-keyscan collects public keys from remote hosts, and the command ftpd is a FTP server daemon. Reference: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 13: Managing Network Services, pages 408-410.
NEW QUESTION # 66
Which of the following files holds the system configuration for journal when running systemd?
- A. /usr/lib/systemd/journalctl.conf
- B. /etc/systemd/systemd-journalctl.conf
- C. /etc/systemd/journald.conf
- D. /etc/systemd/systemd-journald.conf
Answer: C
Explanation:
The file that holds the system configuration for journal when running systemd is /etc/systemd/journald.conf. This file contains various settings that control the behavior of the journald daemon, which is responsible for collecting and storing log messages from various sources. The journald.conf file can be edited to change the default values of these settings, such as the storage location, size limits, compression, and forwarding options of the journal files. The file also supports a drop-in directory /etc/systemd/journald.conf.d/ where additional configuration files can be placed to override or extend the main file. Reference: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 18: Automating Tasks; journald.conf(5) - Linux manual page
NEW QUESTION # 67
A Linux administrator intends to start using KVM on a Linux server. Which of the following commands will allow the administrator to load the KVM module as well as any related dependencies?
- A. modprobe kvm
- B. hotplug kvm
- C. insmod kvm
- D. depmod kvm
Answer: A
Explanation:
Explanation
This command will load the KVM module as well as any related dependencies, such as kvm-intel or kvm-amd, depending on the processor type. The modprobe command is a Linux utility that reads the /etc/modules.conf file and adds or removes modules from the kernel. It also resolves any dependencies between modules, so that they are loaded in the correct order.
The other options are incorrect because:
B: insmod kvm
This command will only load the KVM module, but not any related dependencies. The insmod command is a low-level Linux utility that inserts a single module into the kernel. It does not resolve any dependencies between modules, so they have to be loaded manually.
C: depmod kvm
This command will not load the KVM module at all, but only create a list of module dependencies for modprobe to use. The depmod command is a Linux utility that scans the installed modules and generates a file called modules.dep that contains dependency information for each module.
D: hotplug kvm
This command is invalid and does not exist. The hotplug mechanism is a feature of the Linux kernel that allows devices to be added or removed while the system is running. It does not have anything to do with loading modules.
NEW QUESTION # 68
A Linux administrator is configuring a new internal web server fleet. The web servers are up and running but can only be reached by users directly via IP address. The administrator is attempting to fix this inconvenience by requesting appropriate records from the DNS team. The details are:
Hostname: devel.comptia.org
IP address: 5.5.5.1, 5.5.5.2, 5.5.5.3, 5.5.5.4
Name server: 5.5.5.254
Additional names: dev.comptia.org, development.comptia.org
Which of the following types of DNS records should the Linux administrator request from the DNS team?
(Select three).
- A. RRSIG
- B. NS
- C. TXT
- D. CNAME
- E. SRV
- F. MX
- G. A
- H. PTR
- I. SOA
Answer: B,D,G
Explanation:
Explanation
The Linux administrator should request the following types of DNS records from the DNS team:
A: This record type is used to map a hostname to an IPv4 address. The administrator needs four A records for devel.comptia.org, one for each IP address (5.5.5.1, 5.5.5.2, 5.5.5.3, 5.5.5.4). This will allow users to access the web servers by using the hostname devel.comptia.org instead of the IP addresses1.
CNAME: This record type is used to create an alias for another hostname. The administrator needs two CNAME records, one for dev.comptia.org and one for development.comptia.org, both pointing to devel.comptia.org. This will allow users to access the web servers by using any of these three hostnames interchangeably1.
NS: This record type is used to delegate a domain or a subdomain to another name server. The administrator needs one NS record for comptia.org, pointing to 5.5.5.254, which is the name server that hosts the records for the subdomain devel.comptia.org2. This will allow users to resolve the hostnames under comptia.org by querying the name server 5.5.5.2542.
The other record types are not relevant for the administrator's task:
MX: This record type is used to specify the mail exchange server for a domain or a subdomain1. The administrator does not need this record type because the web servers are not intended to handle email traffic.
PTR: This record type is used to map an IP address to a hostname, which is the reverse of an A record1.
The administrator does not need this record type because the web servers are not expected to be accessed by their IP addresses.
RRSIG: This record type is used to provide digital signatures for DNSSEC, which is a security extension for DNS that verifies the authenticity and integrity of DNS responses3. The administrator does not need this record type because it is not mentioned in the task requirements.
SOA: This record type is used to provide information about the authoritative name server and other parameters for a domain or a subdomain1. The administrator does not need this record type because it is usually created automatically by the name server software when a new zone file is created4.
TXT: This record type is used to store arbitrary text data that can be used for various purposes, such as SPF, DKIM, DMARC, etc1. The administrator does not need this record type because it is not related to the web server functionality.
SRV: This record type is used to specify the location and port number of a service that runs on a domain or a subdomain1. The administrator does not need this record type because the web servers use the standard HTTP port 80, which does not require an SRV record.
References: 1: DNS Record Types - CompTIA Network+ N10-007 - 1.8 2: NS Record - DNSimple Help 3:
DNSSEC - Wikipedia 4: SOA Record - DNSimple Help
NEW QUESTION # 69
Users have been unable to save documents to /home/tmp/temp and have been receiving the following error:
Path not found
A junior technician checks the locations and sees that /home/tmp/tempa was accidentally created instead of /home/tmp/temp. Which of the following commands should the technician use to fix this issue?
- A. ls /home/tmp/tempa
- B. cd /temp/tmp/tempa
- C. cp /home/tmp/tempa /home/tmp/temp
- D. mv /home/tmp/tempa /home/tmp/temp
Answer: D
NEW QUESTION # 70
A Linux administrator is providing a new Nginx image from the registry to local cache. Which of the following commands would allow this to happen?
- A. docker commit nginx
- B. docker pull nginx
- C. docker attach nginx
- D. docker import nginx
Answer: B
NEW QUESTION # 71
A Linux engineer set up two local DNS servers (10.10.10.10 and 10.10.10.20) and was testing email connectivity to the local mail server using the mail command on a local machine when the following error appeared:
The local machine DNS settings are:
Which of the following commands could the engineer use to query the DNS server to get mail server information?
- A. dig @example.com 10.10.10.20 ptr
- B. dig @10.10.10.20 example.com mx
- C. dig @10.10.10.20 example.com ns
- D. dig @example.com 10.10.10.20 a
Answer: B
NEW QUESTION # 72
A systems administrator needs to check if the service systemd-resolved.service is running without any errors.
Which of the following commands will show this information?
- A. systemct1 mask systemd-resolved.service
- B. systemct1 status systemd-resolved.service
- C. systemct1 show systemd-resolved.service
- D. systemct1 enable systemd-resolved.service
Answer: B
Explanation:
Explanation
The command systemct1 status systemd-resolved.service will show the information about the service systemd-resolved.service. The systemct1 command is a tool for managing system services and units.
The status option displays the current status of a unit, such as active, inactive, or failed. The output also shows the unit description, loaded configuration, process ID, memory usage, and recent log messages. This command will show if the service systemd-resolved.service is running without any errors. This is the correct command to use to accomplish the task. The other options are incorrect because they either perform different actions (enable, mask, or show) or do not show the status of the service (systemct1 show systemd-resolved.service only shows the properties of the service, not the status). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 14: Managing Processes and Scheduling Tasks, page
427.
NEW QUESTION # 73
A systems administrator created a new Docker image called test. After building the image, the administrator forgot to version the release. Which of the following will allow the administrator to assign the v1 version to the image?
- A. docker image tag test test:vl
- B. docker image build test:vl
- C. docker image save test test:v1
- D. docker image version test:v1
Answer: A
Explanation:
Explanation
The docker image tag test test:v1 command can be used to assign the v1 version to the image called test. This command creates a new tag for the existing image, without changing the original image. The docker image save test test:v1 command would save the image to a file, not assign a version. The docker image build test:vl command is invalid, as vl is not a valid version number. The docker image version test:v1 command does not exist. References: [CompTIA Linux+ (XK0-005) Certification Study Guide], Chapter 16: Virtualization and Cloud Technologies, page 500.
NEW QUESTION # 74
After listing the properties of a system account, a systems administrator wants to remove the expiration date of a user account. Which of the following commands will accomplish this task?
- A. chage -E -1 accountname
- B. chgrp system accountname
- C. passwd -s accountname
- D. chmod -G system account name
Answer: A
NEW QUESTION # 75
An administrator thinks that a package was installed using a snap. Which of the following commands can the administrator use to verify this information?
- A. snap find
- B. snap install
- C. snap list
- D. snap try
Answer: C
Explanation:
Explanation
The snap list command is used to display the installed snaps on the system1. Snaps are self-contained software packages that can be installed and updated across different Linux distributions2. The snap list command shows the name, version, revision, developer and notes of each snap1.
The snap find command is used to search for snaps in the Snap Store, which is an online repository of snaps2. The snap install command is used to install snaps from the Snap Store or from a local file2. The snap try command is used to test a snap without installing it, by mounting a directory that contains the snap files2.
These commands are not useful for verifying if a package was installed using a snap.
NEW QUESTION # 76
Due to low disk space, a Linux administrator finding and removing all log files that were modified more than
180 days ago. Which of the following commands will accomplish this task?
- A. find /var/log -type f -mtime +180 -exec rm {} \
- B. find /var/log -type c -atime +180 -remove
- C. find /var/log -type d -mtime +180 -print -exec rm {} \;
- D. find /var/log -type f -modified +180 -rm
Answer: A
Explanation:
Explanation
The command that will accomplish the task of finding and removing all log files that were modified more than
180 days ago is find /var/log -type f -mtime +180 -exec rm {} ;. This command will use find to search for files (-type f) under /var/log directory that have a modification time (-mtime) older than 180 days (+180). For each matching file, it will execute (-exec) the rm command to delete it, passing the file name as an argument ({}).
The command will end with a semicolon (;), which is escaped with a backslash to prevent shell interpretation.
The other options are not correct commands for accomplishing the task. The find /var/log -type d -mtime +180
-print -exec rm {} ; command will search for directories (-type d) instead of files, and print their names (-print) before deleting them. This is not what the task requires. The find /var/log -type f -modified +180 -rm command is invalid because there is no such option as -modified or -rm for find. The correct options are
-mtime and -delete, respectively. The find /var/log -type c -atime +180 -remove command is also invalid because there is no such option as -remove for find. Moreover, it will search for character special files (-type c) instead of regular files, and use access time (-atime) instead of modification time. References: find(1) - Linux manual page; Find and delete files older than n days in Linux
NEW QUESTION # 77
A Linux engineer set up two local DNS servers (10.10.10.10 and 10.10.10.20) and was testing email connectivity to the local mail server using the mail command on a local machine when the following error appeared:
The local machine DNS settings are:
Which of the following commands could the engineer use to query the DNS server to get mail server information?
- A. dig @example.com 10.10.10.20 ptr
- B. dig @10.10.10.20 example.com mx
- C. dig @10.10.10.20 example.com ns
- D. dig @example.com 10.10.10.20 a
Answer: B
Explanation:
Explanation
The command dig @10.10.10.20 example.com mx will query the DNS server to get mail server information.
The dig command is a tool for querying DNS servers and displaying the results. The @ option specifies the DNS server to query, in this case 10.10.10.20. The mx option specifies the type of record to query, in this case mail exchange (MX) records, which identify the mail servers for a domain. The domain name to query is example.com. This command will show the MX records for example.com from the DNS server 10.10.10.20.
This is the correct command to use to accomplish the task. The other options are incorrect because they either use the wrong syntax (@example.com 10.10.10.20 instead of @10.10.10.20 example.com), the wrong type of record (a or ptr instead of mx), or the wrong domain name (example.com ns instead of example.com mx). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 13: Managing Network Services, page 415.
NEW QUESTION # 78
A Linux administrator is creating a primary partition on the replacement hard drive for an application server. Which of the following commands should the administrator issue to verify the device name of this partition?
- A. sudo fdisk -h
- B. sudo fdisk -l
- C. sudo fdisk /dev/sda
- D. sudo fdisk -s /dev/sda
Answer: B
Explanation:
The command sudo fdisk -l should be issued to verify the device name of the partition. The sudo command allows the administrator to run commands as the superuser or another user. The fdisk command is a tool for manipulating disk partitions on Linux systems. The -l option lists the partitions on all disks or a specific disk. The command sudo fdisk -l will show the device names, sizes, types, and other information of the partitions on all disks. The administrator can identify the device name of the partition by looking at the output. This is the correct command to use to accomplish the task. The other options are incorrect because they either do not list the partitions (sudo fdisk /dev/sda or sudo fdisk -h) or do not exist (sudo fdisk -s /dev/sda). Reference: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 10: Managing Storage, page 317.
NEW QUESTION # 79
A Linux engineer receives reports that files created within a certain group are being modified by users who are not group members. The engineer wants to reconfigure the server so that only file owners and group members can modify new files by default. Which of the following commands would accomplish this task?
- A. chactr -Rv
- B. chown -cf
- C. umask. 002
- D. chmod 775
Answer: C
NEW QUESTION # 80
An administrator deployed a Linux server that is running a web application on port 6379/tcp.
SELinux is in enforcing mode based on organization policies.
The port is open on the firewall.
Users who are trying to connect to a local instance of the web application receive Error 13, Permission denied.
The administrator ran some commands that resulted in the following output:
Which of the following commands should be used to resolve the issue?
- A. semanage port -a -t http_port_t -p tcp 6379
- B. semanage port -l -t http_port_tcp 6379
- C. semanage port -a http_port_t -p top 6379
- D. semanage port -d -t http_port_t -p tcp 6379
Answer: A
Explanation:
Explanation
The command semanage port -a -t http_port_t -p tcp 6379 adds a new port definition to the SELinux policy and assigns the type http_port_t to the port 6379/tcp. This allows the web application to run on this port and accept connections from users. This is the correct way to resolve the issue. The other options are incorrect because they either delete a port definition (-d), use the wrong protocol (top instead of tcp), or list the existing port definitions (-l). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 18:
Securing Linux Systems, page 535.
NEW QUESTION # 81
Which of the following technologies can be used as a central repository of Linux users and groups?
- A. MFA
- B. PAM
- C. LDAP
- D. SSO
Answer: C
NEW QUESTION # 82
Junior system administrator had trouble installing and running an Apache web server on a Linux server. You have been tasked with installing the Apache web server on the Linux server and resolving the issue that prevented the junior administrator from running Apache.
INSTRUCTIONS
Install Apache and start the service. Verify that the Apache service is running with the defaults.
Typing "help" in the terminal will show a list of relevant event commands.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Answer:
Explanation:
See the explanation below.
Explanation
yum install httpd
systemct1 --now enable httpd
systemct1 status httpd
netstat -tunlp | grep 80
pkill <processname>
systemct1 restart httpd
systemct1 status httpd
NEW QUESTION # 83
A systems administrator needs to verify whether the built container has the app.go file in its root directory. Which of the following can the administrator use to verify the root directory has this file?
- A. docker exec <container_name> ls
- B. docker container inspect
- C. docker ps <container_name>
- D. docker image inspect
Answer: A
Explanation:
The docker exec <container_name> ls command can be used to verify whether the built container has the app.go file in its root directory. This command will run the ls command inside the specified container and list the files and directories in its root directory. If the app.go file is present, it will be displayed in the output. The docker image inspect command will display information about an image, not a container, and it will not list the files inside the image. The docker container inspect command will display information about a container, not its files. The docker ps <container_name> command is invalid, as ps does not accept a container name as an argument. Reference: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 16: Virtualization and Cloud Technologies, page 499.
NEW QUESTION # 84
A junior administrator is trying to set up a passwordless SSH connection to one of the servers. The administrator follows the instructions and puts the key in the authorized_key file at the server, but the administrator is still asked to provide a password during the connection.
Given the following output:
Which of the following commands would resolve the issue and allow an SSH connection to be established without a password?
- A. restorecon -rv .ssh/authorized_key
- B. systemctl restart sshd.service
- C. mv .ssh/authorized_key .ssh/authorized_keys
- D. chmod 600 mv .ssh/authorized_key
Answer: B
NEW QUESTION # 85
A Linux administrator is adding a new configuration file to a Git repository. Which of the following describes the correct order of Git commands to accomplish the task successfully?
- A. pull -> add -> commit -> push
- B. checkout -> push -> add -> pull
- C. pull -> add -> push -> commit
- D. pull -> push -> add -> checkout
Answer: A
Explanation:
Explanation
The correct order of Git commands to add a new configuration file to a Git repository is pull -> add -> commit
-> push. The pull command will fetch and merge the changes from the remote repository to the local repository, ensuring that the local repository is up to date. The add command will stage the new configuration file for the next commit, marking it as a new file to be tracked by Git. The commit command will create a new snapshot of the project state with the new configuration file and a descriptive message. The push command will publish the commit to the remote repository, updating the remote branch with the new configuration file.
The pull -> push -> add -> checkout order is incorrect, as it will not create a commit for the new configuration file, and it will switch to a different branch without pushing the changes. The checkout -> push -> add -> pull order is incorrect, as it will switch to a different branch before adding the new configuration file, and it will overwrite the local changes with the remote changes without creating a commit. The pull -> add -> push -> commit order is incorrect, as it will not create a commit before pushing the changes, and it will create a commit that is not synchronized with the remote branch. References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 20: Writing and Executing Bash Shell Scripts, page 579.
NEW QUESTION # 86
A DevOps engineer needs to download a Git repository from https://git.company.com/admin/project.git.
Which of the following commands will achieve this goal?
- A. git pull https://git.company.com/admin/project.git
- B. git checkout https://git.company.com/admin/project.git
- C. git clone https://git.company.com/admin/project.git
- D. git branch https://git.company.com/admin/project.git
Answer: C
Explanation:
Explanation
The command git clone https://git.company.com/admin/project.git will achieve the goal of downloading a Git repository from the given URL. The git command is a tool for managing version control systems.
The clone option creates a copy of an existing repository. The URL specifies the location of the repository to clone, in this case https://git.company.com/admin/project.git. The command git clone
https://git.company.com/admin/project.git will download the repository and create a directory named project in the current working directory. This is the correct command to use to accomplish the goal. The other options are incorrect because they either do not download the repository (git checkout, git pull, or git branch) or do not use the correct syntax (git checkout https://git.company.com/admin/project.git instead of git checkout -b project https://git.company.com/admin/project.git or git branch
https://git.company.com/admin/project.git instead of git branch project
https://git.company.com/admin/project.git). References: CompTIA Linux+ (XK0-005) Certification Study Guide, Chapter 19: Managing Cloud and Virtualization Technologies, page 571.
NEW QUESTION # 87
As a Systems Administrator, to reduce disk space, you were tasked to create a shell script that does the following:
Add relevant content to /tmp/script.sh, so that it finds and compresses rotated files in /var/log without recursion.
INSTRUCTIONS
Fill the blanks to build a script that performs the actual compression of rotated log files.
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.
Answer:
Explanation:
NEW QUESTION # 88
A Linux systems administrator needs to copy files and directories from Server A to Server B. Which of the following commands can be used for this purpose? (Select TWO)
- A. cp
- B. reposync
- C. rsyslog
- D. scp
- E. rsync
- F. ssh
Answer: D,E
NEW QUESTION # 89
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CompTIA Linux+ certification is a valuable credential for IT professionals who work with Linux-based systems. CompTIA Linux+ Certification Exam certification validates the skills and knowledge required to work with Linux in a professional setting and demonstrates to employers that the candidate has the expertise needed to succeed in a Linux-related role.
CompTIA XK0-005 Official Cert Guide PDF: https://passtorrent.testvalid.com/XK0-005-valid-exam-test.html